Commissioned by Marcus Agrippa, restored by Domitian, and subsequently rebuilt by Hadrian (who added the dome), the Pantheon was turned into a church in the early 7th Century by Pope Boniface IV. The building's sole source of light is the opening at the dome's apex (the oculus); according to popular legend, this formed the base for the bronze pine cone that is now in the Vatican's Pigna courtyard, where it is used as a fountain. Many famous Italians are buried in the Pantheon, including Renaissance painter Raphael and King Vittorio Emanuele I